| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef _COMMON_NVM_H_ |
| #define _COMMON_NVM_H_ |
| |
| #include <stddef.h> |
| |
| /* Determine if area is erased. returns 1 if erased. 0 otherwise. */ |
| int nvm_is_erased(const void *start, size_t size); |
| |
| /* Erase region according to start and size. Returns < 0 on error else 0. */ |
| int nvm_erase(void *start, size_t size); |
| |
| /* Write data to NVM. Returns 0 on success < 0 on error. */ |
| int nvm_write(void *start, const void *data, size_t size); |
| |
| /* Determine if flash device is write protected */ |
| int nvm_is_write_protected(void); |
| |
| /* Apply protection to a range of flash */ |
| int nvm_protect(void *start, size_t size); |
| |
| /* Map MMIO address to actual address in flash */ |
| uint32_t nvm_mmio_to_flash_offset(void *p); |
| |
| #endif /* _COMMON_NVM_H_ */ |